Parts
What is the main organ of the respiratory system?
The lungs.
What do we breathe in that our body needs?
Oxygen.
What can happen if you smoke?
It can damage your lungs and cause diseases.
How many lungs do humans have?
Two.
What are the tiny air sacs in the lungs called?
Alveoli.
What gas do we exhale?
Carbon dioxide.
Name a disease that affects the lungs.
Asthma or bronchitis.
What percentage of air is oxygen?
21%.
What tube carries air to the lungs?
The trachea or windpipe.
What is the process of exchanging gases called?
Respiration.
What is one way to keep your lungs healthy?
Don't smoke or exercise regularly.
Name one animal that breathes through gills.
Fish.
What is the flap that covers the trachea when swallowing?
The epiglottis.
How does oxygen get into our blood?
Through the alveoli in the lungs.
What does asthma affect?
The airways in the lungs.
What is the largest organ in the body?
The skin.
What is the muscle that helps you breathe?
The diaphragm.
Why is the respiratory system important?
It provides oxygen to the body and removes carbon dioxide.
What is a common symptom of a respiratory infection?
Coughing or difficulty breathing.
What happens to your breathing rate when you exercise?
It increases.